This is a proof of concept for an FLTK backend for Egui using a GlutWindow. The code is based on https://github.com/ArjunNair/eguisdl2gl modified for fltk-rs.
To run the examples, just run:
$ cargo run --example triangle
$ cargo run --example basic
A demo app can be found here: https://github.com/fltk-rs/demos/tree/master/egui-demo